EXTENDED INTENSITY FACTORS OF TYPICAL CRACKS IN THREE-DIMENSOINALELECTROMAGNETOELASTIC MATERIALS
Using the Greens functions, the extended general displacement solutions are obtained for a planar crack in a three-dimensional electromagnetothermoelastic solid by boundary integral equation method. Then the crack problem is reduced to solving a set of hypersingular integral equations, in which the unknown functions are the extended displacement discontinuities of the crack surface. Based on the analytical behavior of the unknown functions near the crack front, a numerical method for some typical cracks subjected to extended loads is proposed, in which the extended displacement discontinuities are approximated by the products of basic density functions and polynomials. Finally, the distributions of the extended intensity factors varying with the shape of the crack are presented. The results show that the present method yields smooth variations of extended intensity factors along the crack front accurately.
Electromagnetoelastic material crack hypersingular integral equations extended stress intensity factor
Tai-yan QIN Xiao-juan LI Lin-nan ZHANG Peng ZHAO
College of Science, China Agriculture University, Beijing 100083, China
国际会议
深圳
英文
594-597
2011-12-09（万方平台首次上网日期，不代表论文的发表时间）